Error Troubleshooting

In Example 3a and Problems 6-10 in the Review Questions, remind students to follow the order of operations. Clear parentheses first.

When multiplying both sides of the inequality by \begin{align*}4\end{align*} in Example 3b, remind students to multiply both terms on the right by \begin{align*}4\end{align*}.

In Example 6,

Remind students that the given numbers must be in the same unit, dollars (or cents).

Remind students to round their answers up to the next highest integer. Ask them why this is necessary.

Additional Example:

A local bicycle shop advertises bikes for as low as \begin{align*}\$235\end{align*}. Ted decides to save his lunch money to purchase one. If he puts away \begin{align*}85\;\mathrm{cents}\end{align*} daily (including weekends), in how many days will he be able to bring home a bike?

Hint: Convert \begin{align*}85\;\mathrm{cents}\end{align*} to \begin{align*}0.85\;\mathrm{dollars}\end{align*}. Round the answer up to \begin{align*}277\end{align*} days.